Apps you'll use every day.
Software crafted with care by two brothers. Apps published on App Store, Google Play and also on the web. Free online tools for calculations, QR codes, passwords, text and quick tasks.
Free tools
Useful utilities from the first visit.
Use calculators, generators and text tools in the browser, with examples, limits and sources where applicable.
See all toolsCompound interest
Calculate compound interest with an initial amount, monthly contributions, rate and term.
OpenQR Code
Create QR codes for links, text, email, phone, WhatsApp and Wi-Fi in your browser.
OpenPassword
Generate strong random passwords with letters, numbers and symbols in your browser.
OpenPercentage
Calculate percentages, discounts, increases and percentage change quickly online.
OpenJSON
Paste JSON to format, validate, minify and copy the result in your browser.
OpenUseful guides
Understand the task before calculating.
Short guides explain how to use the tools, when to trust a result and when to check an official source.